Noun: hydroxyl radical hI'dr??k-sil 'ra-di-kulThe monovalent group -OH in such compounds as bases and some acids and alcohols - hydroxyl, hydroxyl groupDerived forms: hydroxyl radicalsType of: chemical group, group, radicalEncyclopedia: Hydroxyl radicalNearesthydroxyhydroxy acidhydroxyacetic acidhydroxybenzenehydroxybenzoic acidhydroxybutyric acidhydroxychloroquinehydroxylhydroxyl grouphydroxyl io